Hard Probes in Heavy Ion Collisions at the LHC: Jet Physics
We discuss the importance of high-pT hadron and jet measurements in nucleus-nucleus collisions at the CERN Large Hadron Collider.
hep-ph↗
arXiv subjects
S. V. Shmatov
Publications and source records attributed to S. V. Shmatov.
Rapidity distribution of jet quenching: effects on global observables
We discuss modification in the rapidity distribution of the transverse energy flow as a signal of medium-induced partonic energy loss in ultrarelativistic heavy ion collisions. A scan of the global energy flow and jet rates in the wide rapidity region might provide the important information about the pseudo-rapidity size of a dense medium created in heavy ion collisions at the LHC.
hep-ph↗
Manifestation of Jet Quenching in the Total Transverse Energy Distributions in the Nucleus-Nucleus Collisions
In the framework of the HIJING model global characteristics of nucleus- nucleus collisions are studied for a Large Hadron Collider energy scale. An interesting model prediction is the presence of a central bump over a pseudorapidity plateau of a total transverse energy distribution. The bump is induced by a jet quenching effect in a dense nuclear matter. It is shown that on a wide acceptance calorimeter with a pseudorapidity coverage -5 < η< 5 allow to obtain experimental confirmation of such an effect.
hep-ph↗
Global Features of Nucleus-Nucleus Collisions in the Ultrarelativistic Domain
HIJING generator simulation of nucleus-nucleus collisions at ultrarelativistic energies are presented. Is shown, that the global characteristics of nucleus-nucleus collisions, such as of distribution of a charge multiplicity, total and electromagnetic transverse energy over pseudorapidity are rather sensitive to some predictions of formation models of high-exited nuclear medium, namely parton energy losses in dense nuclear matter. This losses results to appearance of a broad maximum in global variable distributions over pseudorapidity. The most profound of this effect occurs at central heavy ion collisions at LHC energy.
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Global Characteristics of Nucleus-Nucleus Collisions in an Ultrarelativistic Domain
The global observable distributions of nucleus-nucleus collisions at high energy are studied. It is shown that these distributions are sensitive to interaction dynamics and can be used to investigate the evolution of dense nuclear matter. At the LHC energy scale ($\sqrt{s_{NN}}=5$ TeV in the heavy ion mode), a central bump over pseudorapidity plateau in the differential distributions of total transverse energy flows induced by the jet quenching effect was obtained. The energy-loss dependence on the energy for various colliding ion species was explored. Also a new scheme for collision geometry determination is proposed as well. It is based on the correlation between transverse energy flow in the pseudorapidity interval $3<|η|<5$ and an impact parameter.
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